style-police: fixed badly readable code in ProcessMessage()

- I introduced the problem and fixed it with better readable code

src/main.cpp

@@ -3786,7 +3786,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
                 LogPrint("mempool", "mapOrphan overflow, removed %u tx\n", nEvicted);
         }
         int nDoS = 0;
-        if (state.IsInvalid(nDoS) && nDoS > 0)
+        if (state.IsInvalid(nDoS))
+            if (nDoS > 0)
                 pfrom->Misbehaving(nDoS);
     }
 
@@ -3806,7 +3807,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         if (ProcessBlock(state, pfrom, &block))
             mapAlreadyAskedFor.erase(inv);
         int nDoS = 0;
-        if (state.IsInvalid(nDoS) && nDoS > 0)
+        if (state.IsInvalid(nDoS))
+            if (nDoS > 0)
                 pfrom->Misbehaving(nDoS);
     }